NV prolonged valve tick after torture

[samiam3356]

^^thanks for the info

[JRKOUPE]

oyl

I did a swap last year to s50........the shop put in some Rotella I think, and after 2 track days she sounded loud enough after a few runs that other dudes came over w/ some concern.

By the time I was on way home from the track, noise was gone.


This yr I went to Mobil 1 15/50....after 4 warm hard days totalling over 8 run sessions, no noise at all....I overfill a bit....and let her run maybe 60 seconds after I come in.

200/210/ 220 is no biggie on oyl temps

[Wh33lhop]

Overfill by a little. Thatll bandaid the problem.

I did that for this last weekend, seemed to help quite a bit. Guess I'll just keep it up.

Here dude, I found the answer for you:

http://en.wikipedia.org/wiki/BMW_M88

Haha, that would be quite an answer.

What oil do you run?

Just 76 brand semi-syn 5W30

[BenM]

I hit 240 F @ NHIS driver's school during last years July 4th weekend, and the motor (stock M50TU) still runs like a champ with about a few seconds of valve tick at startups. Running Mobil 1 15W50 Synthetic and was in 95 F Heat with a lot of humidity as well. Sure was fun chasing and passing an S38 powered E9 CSL Replica. :)

[Voluted]

I was getting that noise after runs during last year's auto-x season. This year I'm running an OBD2 valve cover and castrol 5w50 and I don't get that noise any more. Last year I was running 15w40 Royal Purple.

[MR 325]

What oil do you run?

[rbartongrimley]

Here dude, I found the answer for you:

http://en.wikipedia.org/wiki/BMW_M88

[samiam3356]

I am not running an oil cooler; I do not know of an easy way to run one with a DOHC motor.

IIRC you want to back off around 200F oil temp if you care about your motor. I burn oil pretty quickly so I don't run M1 or anything, just some generic 5w30 semi-syn. Nobody else gets tick on their M/s5x after a good hard run?

Running the same right now until I change it out next time. I get that same tick on mine as well but its usually when temps are cooler and goes away when it wamrs up and I get the rpms up.

Going with Mobil 1 Sythetic next time.

[328ijunkie]

Overfill by a little. Thatll bandaid the problem.

[Sagaris]

Yes, a lot of them had the sandwich style oil coolers that fits between the oil filter housing and the filter itself. I did not have one, so I bought one. The install didn't go well and there is a story about that but I dont want to hijack the thread

[M-technik-3]

No water/oil cooler in the VW? Most old skool VW gen I&II had the Water to oil coolers in GTi's and Scirocco's

[Sagaris]

What's fatal temp range?

As far as I have seen 240 F is when you need to tone it back as wheelhop said : if you care about engine, and 275 F is when you can expect things to fail very quickly. I got some really nasty bearing clack at 270 F once when I was beating up my VW 8 valve motor.Many of the 370z guys have oil temperature issues which have caused problems with the metallurgical characteristics of the softer metals in the engine bearings and have required the bearings to be replaced. This was in the 270-290 range from those I have spoken to with these issues.

In my VW 8valve motor with no oil cooler, I was able to hit 235 F -245 F just by running full throttle up an mild incline during the summer.

Somebody with more knowledge about failure temperatures, please chime in, I am just going off of what I have learned and read over the years.

[Adrian_Visser]

I'm thinking I probably need to let my car cool down more after each run. I have a bad habit of finishing and turning the car off right away to go check my time. Coolant temp never goes high but who knows what my oil temp is doing.

[M-technik-3]

Won't say that 200-210 degrees F is fatal. Most if not all manufacturer's set there default at 210 so to get rid of crankcase condensation.

I see 190 most of the time in the M3 but it has a moisture separator. Hits 220 at track on warm days at DE's.

[Ian Bowers]

The M50NV in the E36 I drove at Gymkhana last month ticked like crazy after beating on it. Went away as soon as it cooled, the organizer (Geoff) said "it's a Bimmer thing. We had some dude in an M-Coupe come out here on drift days and it sounded like shit after every run, but he was never worried, said it was normal."